Question 1

What function does the alternator perform in the vehicle?

Accepted Answer

The alternator generates electricity while the engine is running, recharging the battery and powering all electrical systems in the car: lights, climate control, radio, fuel injection, ABS, etc. Without a functional alternator, the vehicle runs on battery only and will shut down within minutes.

Question 2

How do I know if my alternator is failing?

Accepted Answer

Failure signs: battery warning light on, dim or flickering lights, battery draining quickly, starting problems, strange noises (worn bearing) and burning smell. If the battery light comes on while driving, check the alternator immediately.

Question 3

How long does an alternator last?

Accepted Answer

A well-maintained alternator lasts between 120,000 and 150,000 km or 7-10 years. Lifespan depends on usage conditions: short trips, additional electrical accessories and extreme temperatures shorten its duration. Regularly checking belt and tension extends its life.

Question 4

New or remanufactured alternator: which to choose?

Accepted Answer

Both are valid. New alternators include full manufacturer warranty (typically 2 years). Remanufactured ones are more economical, have been professionally restored with new components (bearings, regulator, brushes) and offer performance equivalent to original.

Question 5

Can I drive with a faulty alternator?

Accepted Answer

Not recommended. The car will run on battery only until depleted (typically 15-30 minutes). Then it will stop and won't start. Additionally, critical safety systems (ABS, ESP, electric power steering) may fail. Replace the alternator as soon as possible.